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Old 05-28-2011, 03:25 PM   #1
Paul Lester
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Default Some thoughts on tightening the input shaft nut

First, just do it! I followed the the excellent description given by "Plastic Torpedo" and it took about three hours total. If I did it again I could probably shave an hour off that. I also heeded "blackeagle1" advise to remove the two 9mm bolts from the cover that hold one of the tubes. This made it possible to rotate the cover as it was removed and made putting it back a snap. The most aggravating part of the whole job was cleaning off the old gasket. The 23mm socket I got at Oreilly's was too thick to fit in the clutch pack but I took an angle grinder and ground down the outside of the socket a bit and it fit fine after that. Changed the fluid and filter and went for a drive. Reverse is smooth and there was a slight hard shift into second for a while but that went away after a few times and seems to be gone for good. This forum saved me at least a couple of grand or the hassle of buying another car. Thanks to all. Paul.

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Old 05-28-2011, 03:33 PM   #2
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Default Re: Some thoughts on tightening the input shaft nut

Did you grind the frame or drop the cradle etc.

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Old 05-28-2011, 04:03 PM   #3
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Default Re: Some thoughts on tightening the input shaft nut

Quote:
Originally Posted by OU812 View Post
Did you grind the frame or drop the cradle etc.
Why bother? Not needed when you undo the pair of 9mm bolts, it pulls right out.

$4 socket from Napa worked perfect on '96 SL1 autotragic with only a grinding noise for reverse. Never did bother actually fixing that, only reliable way to fix an autotragic is to swap a 5spd in.

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Old 05-28-2011, 04:16 PM   #4
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Default Re: Some thoughts on tightening the input shaft nut

Quote:
Originally Posted by Paul Lester View Post
First, just do it! I followed the the excellent description given by "Plastic Torpedo" and it took about three hours total. If I did it again I could probably shave an hour off that. I also heeded "blackeagle1" advise to remove the two 9mm bolts from the cover that hold one of the tubes. This made it possible to rotate the cover as it was removed and made putting it back a snap. The most aggravating part of the whole job was cleaning off the old gasket. The 23mm socket I got at Oreilly's was too thick to fit in the clutch pack but I took an angle grinder and ground down the outside of the socket a bit and it fit fine after that. Changed the fluid and filter and went for a drive. Reverse is smooth and there was a slight hard shift into second for a while but that went away after a few times and seems to be gone for good. This forum saved me at least a couple of grand or the hassle of buying another car. Thanks to all. Paul.
I thought I remembered this written somewhere in the thousands of S-series threads:

The symptom=Clunks and no reverse
The virus=Bad Valve Body

So if you havent replaced the solenoid or valve that is causing the clunk and no reverse, you're only fixing the symptoms, not the problem. The nut will back out again

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Old 05-28-2011, 05:21 PM   #5
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Default Re: Some thoughts on tightening the input shaft nut

Quote:
Originally Posted by OU812 View Post
Did you grind the frame or drop the cradle etc.
I loosened the cradle at the front and back which gave me a bit more clearance. After reading so many warnings to not bend the tubes I was especially careful to pull straight out. In my case I don't think it would have cleared otherwise. I did not want to alter the frame.

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Old 05-28-2011, 05:26 PM   #6
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Default Re: Some thoughts on tightening the input shaft nut

Quote:
Originally Posted by FlipThisSaturn View Post
I thought I remembered this written somewhere in the thousands of S-series threads:

The symptom=Clunks and no reverse
The virus=Bad Valve Body

So if you havent replaced the solenoid or valve that is causing the clunk and no reverse, you're only fixing the symptoms, not the problem. The nut will back out again
You may be right but for now the car shifts smoothly in all gears and at such high milage it is worth trying it this way. I can always do it again and replace the valve body next.

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Old 05-28-2011, 05:40 PM   #7
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Default Re: Some thoughts on tightening the input shaft nut

Oh you're definitely right. And as easy as it is to fix, you can replace 40 nuts for the cost it takes to replace the valve body. Just depends what your time is worth. You'll be able to knock it out in 30 minutes pretty soon haha

Can you post the link to the instructions about removing the tube bolt to make it slide easier? Does that make it so you dont have to remove the tubes?

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Old 05-28-2011, 08:34 PM   #8
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Default Re: Some thoughts on tightening the input shaft nut

Quote:
Originally Posted by FlipThisSaturn View Post
Oh you're definitely right. And as easy as it is to fix, you can replace 40 nuts for the cost it takes to replace the valve body. Just depends what your time is worth. You'll be able to knock it out in 30 minutes pretty soon haha

Can you post the link to the instructions about removing the tube bolt to make it slide easier? Does that make it so you dont have to remove the tubes?
Just remove the two small bolts in the cover. They attach one of the tubes to the cover. That just leaves one you have to deal with when removing the cover. You still have to remove the loose tube to tighten the nut but just grab it and pull. When you put the cover back put the loose tube in first and put the screw holes in the general position to replace bolts. Slide the cover in place and then tease the bolt holes into position with a small probe to align the holes for the bolts. Finger tighten the small bolts and be sure the cover is properly seated then finish tightening them.

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Old 05-28-2011, 08:43 PM   #9
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Default Re: Some thoughts on tightening the input shaft nut

These 3 posts provide a detailed description of the nut replacement exercise, with pictures.

http://www.saturnfans.com/forums/sho...d.php?t=112858

http://www.saturnfans.com/forums/sho...d.php?t=164114

http://www.saturnfans.com/forums/sho...d.php?t=164115

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Old 05-29-2011, 05:53 PM   #10
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Default Re: Some thoughts on tightening the input shaft nut

Here's a link to the tool I make for holding the clutch pack:
http://www.saturnfans.com/classified...t/3767/cat/500

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Old 05-31-2011, 08:09 PM   #11
Paul Lester
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Default Re: Some thoughts on tightening the input shaft nut

Quote:
Originally Posted by fetchitfido View Post
Why bother? Not needed when you undo the pair of 9mm bolts, it pulls right out.

$4 socket from Napa worked perfect on '96 SL1 autotragic with only a grinding noise for reverse. Never did bother actually fixing that, only reliable way to fix an autotragic is to swap a 5spd in.
I sort of have to take issue with the term "autotragic". This car(bought new in 2000) has 187,000 miles now and the only problem I have ever had with the transmission was last week and I was able to fix it myself. Seems like a pretty good piece of equipment to me.

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